13123023123221 has 8 divisors (see below), whose sum is σ = 14326185657600. Its totient is φ = 11921553994240.

The previous prime is 13123023123187. The next prime is 13123023123253. The reversal of 13123023123221 is 12232132032131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-13123023123221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123023623221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423335141 + ... + 423366138.

It is an arithmetic number, because the mean of its divisors is an integer number (1790773207200).

Almost surely, 2^{13123023123221} is an apocalyptic number.

13123023123221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13123023123221 is a deficient number, since it is larger than the sum of its proper divisors (1203162534379).

13123023123221 is a wasteful number, since it uses less digits than its factorization.

13123023123221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846702699.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 13123023123221 its reverse (12232132032131), we get a palindrome (25355155155352).

The spelling of 13123023123221 in words is "thirteen trillion, one hundred twenty-three billion, twenty-three million, one hundred twenty-three thousand, two hundred twenty-one".